The following uBlock Origin cosmetic filters seem to do the job: news.ycombinator.com##.athing:has([href="from?site=aeon.co"]) news.ycombinator.com##.athin

The following uBlock Origin cosmetic filters seem to do the job: news.ycombinator.com##.athing:has([href="from?site=aeon.co"]) news.ycombinator.com##.athing:has([href="from?site=aeon.co"]) + tr news.ycombinator.com##.athing:has([href="from?site=aeon.co"]) + tr + tr